drm/i915: split out gem/i915_gem_userptr.h from i915_drv.h

We already have the gem/i915_gem_userptr.c file.

Acked-by: Tvrtko Ursulin <[e-mail]>
Signed-off-by: Jani Nikula <[e-mail]>
Link: https://patchwork.freedesktop.org/patch/msgid/c29[e-mail]

drivers/gpu/drm/i915/gem/i915_gem_userptr.c

···
 #include "i915_drv.h"
 #include "i915_gem_ioctls.h"
 #include "i915_gem_object.h"
+#include "i915_gem_userptr.h"
 #include "i915_scatterlist.h"
 
 #ifdef CONFIG_MMU_NOTIFIER

drivers/gpu/drm/i915/gem/i915_gem_userptr.h

···
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2021 Intel Corporation
+ */
+
+#ifndef __I915_GEM_USERPTR_H__
+#define __I915_GEM_USERPTR_H__
+
+struct drm_i915_private;
+
+int i915_gem_init_userptr(struct drm_i915_private *dev_priv);
+void i915_gem_cleanup_userptr(struct drm_i915_private *dev_priv);
+
+#endif /* __I915_GEM_USERPTR_H__ */

drivers/gpu/drm/i915/i915_drv.h

···
 }
 
 /* i915_gem.c */
-int i915_gem_init_userptr(struct drm_i915_private *dev_priv);
-void i915_gem_cleanup_userptr(struct drm_i915_private *dev_priv);
 void i915_gem_init_early(struct drm_i915_private *dev_priv);
 void i915_gem_cleanup_early(struct drm_i915_private *dev_priv);
 

drivers/gpu/drm/i915/i915_gem.c

···
 #include "gem/i915_gem_ioctls.h"
 #include "gem/i915_gem_mman.h"
 #include "gem/i915_gem_region.h"
+#include "gem/i915_gem_userptr.h"
 #include "gt/intel_engine_user.h"
 #include "gt/intel_gt.h"
 #include "gt/intel_gt_pm.h"